Question

Which equation matches the graph shown?

A. y = 4x + 3
B. y = -4x - 3
C. y = 4x - 3
D. y = -4x + 3

Answer 1

Take 2 points

• (0,-3)
• (1,1)

Slope:-

`\\ \sf\longmapsto m=(1+3)/(1)=4`

Equation of line in point slope form

`\\ \sf\longmapsto y-y_1=m(x-x_1)`

`\\ \sf\longmapsto y+3=4x`

`\\ \sf\longmapsto y=4x-3`

Answer 2

• C. y = 4x - 3

Explanation:

The line has a positive slope and negative y-intercept.

• m = 4, b = - 3

This is only matched by a choice C